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Specialty: Orthopaedics

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Total 785 results found since Jan 2013.

Limited fascicle shortening and fascicle rotation may be associated with impaired voluntary force-generating capacity in pennate muscles of chronic stroke survivors
This association implies that such fascicle changes could impair the force-generating capacity of the muscle in chronic stroke survivors.
Source: Clinical Biomechanics - April 18, 2020 Category: Orthopaedics Authors: Jongsang Son, William Z. Rymer, Sabrina S.M. Lee Source Type: research

Non-invasive assessment of motor unit activation in relation to motor neuron level and lesion location in stroke and spinal muscular atrophy
The results suggest, that for stroke, information from the brain is modified thereby resulting in motor units firing at their natural frequency. Thus, high spatial resolution electromyography and the chosen parameters facilitate non-invasive, objective differentiation and analysis of the activation patterns of motor units in neuromuscular disorders.
Source: Clinical Biomechanics - May 26, 2020 Category: Orthopaedics Authors: Sybele E. Williams, Kathrin C. Koch, Catherine Disselhorst-Klug Source Type: research

Maintaining sagittal plane balance compromises frontal plane balance during reactive stepping in people post-stroke
Background. Maintaining balance in response to perturbations during walking often requires the use of corrective responses to keep the center of mass within the base of support. The relationship between center of mass and base of support is often quantified using the margin of stability. Although people post-stroke increase the margin of stability following perturbations, control deficits may lead to asymmetries in regulation of margins of stability, which may also cause maladaptive coupling between the sagittal and frontal planes during balance-correcting responses.
Source: Clinical Biomechanics - July 27, 2020 Category: Orthopaedics Authors: Tom J.W. Buurke, Chang Liu, Sungwoo Park, Rob den Otter, James M. Finley Source Type: research

The incidence of stroke among selected patients undergoing elective posterior lumbar fusion: a retrospective cohort study
The objective of this study wa...
Source: BMC Musculoskeletal Disorders - September 14, 2020 Category: Orthopaedics Authors: Patrick J. Arena, Jingping Mo, Charu Sabharwal, Elizabeth Begier, Xiaofeng Zhou, Alejandra Gurtman, Qing Liu, Rongjun Shen, Charles Wentworth and Kui Huang Tags: Research article Source Type: research

Posterior fall-recovery training applied to individuals with chronic stroke: A single-group intervention study
The skill of posterior stepping in response to a perturbation can be improved with practice in those with chronic stroke, we were not able to identify consistent underlying kinematic mechanisms behind this adaptation.
Source: Clinical Biomechanics - December 20, 2020 Category: Orthopaedics Authors: Jamie Pigman, Darcy S. Reisman, Ryan T. Pohlig, John J. Jeka, Tamara R. Wright, Benjamin C. Conner, Drew A. Petersen, Michael S. Christensen, Jeremy R. Crenshaw Source Type: research

Does the stimulus provoking a stepping reaction correlate with step characteristics and clinical measures of balance and mobility post-stroke?
These results support objective measurement of centre of mass to quantify the stimulus influencing step dynamics and stepping performance during retraining interventions following stroke.
Source: Clinical Biomechanics - February 13, 2022 Category: Orthopaedics Authors: Adrian K.M. Lai, James M. Wakeling, S. Jayne Garland, Michael A. Hunt, Tanya D. Ivanova, Courtney L. Pollock Source Type: research

The effect of three dimensional printing hinged ankle foot orthosis for equinovarus control in stroke patients
Dynamic plantar pressure measurement is useful for evaluation of equinovarus deformity in hemiplegic stroke patients. Wearing 3D printed ankle foot orthosis increase plantar pressure in medial midfoot area. And medial midfoot contact area is also more symmetry.
Source: Clinical Biomechanics - March 11, 2022 Category: Orthopaedics Authors: Jimmy Chun-Ming Fu, Yi-Jen Chen, Cyuan-Fong Li, Yu-Hsuan Hsiao, Chia-Hsin Chen Source Type: research

Differences in paretic lower limb loading and fluidity in sit-to-walk according to selection of the leading limb in individuals with stroke
Sit-to-walk with the paretic leading limb seems to be an adaptive movement because many participants preferred leading with the paretic limb. However, selection of the leading limb in sit-to-walk involves a biomechanical tradeoff between paretic limb loading at seat-off and movement fluidity in individuals with stroke. Use of the paretic leading limb requires loading capacity of this limb, and the non-paretic leading limb must have high balance ability to merge sit-to-stand and gait initiation.
Source: Clinical Biomechanics - April 1, 2022 Category: Orthopaedics Authors: Yuji Osada, Naoyuki Motojima, Yosuke Kobayashi, Sumiko Yamamoto Source Type: research

Characteristics and perioperative complications of hip fracture in the elderly with acute ischemic stroke: a cross-sectional study
Patients with acute ischemic stroke (AIS) after hip fracture in the elderly have worse prognosis. We aimed to describe the characteristics and complications of hip fracture with AIS in the elderly.
Source: BMC Musculoskeletal Disorders - July 5, 2022 Category: Orthopaedics Authors: Yaqian Zhang, Mingming Fu, Junfei Guo, Yuqi Zhao, Zhiqian Wang and Zhiyong Hou Tags: Research Source Type: research

Instantaneous effect of real-time avatar visual feedback on interlimb coordination during walking post-stroke
Improvements in gait symmetry may be explained by changes in interlimb coordination. Current data and existing literature further suggest that such improvements are largely driven by adaptations in non-paretic leg movements, notably at the hip. By providing real-time information on walking movements not affordable in other ways, avatar-based feedback shows great potential to improve gait symmetry and interlimb coordination post-stroke.
Source: Clinical Biomechanics - November 13, 2022 Category: Orthopaedics Authors: Le Yu Liu, Samir Sangani, Kara K. Patterson, Joyce Fung, Anouk Lamontagne Source Type: research

A portable visual biofeedback device can accurately measure and improve hip extension angle in individuals post-stroke
Our novel and inexpensive biofeedback method may provide benefit for individuals post-stroke and expand the possibilities for feedback in rehabilitation.
Source: Clinical Biomechanics - April 18, 2023 Category: Orthopaedics Authors: Erica H. Hinton, Russell Buffum, Nick Stergiou, David Kingston, Samuel Bierner, Brian A. Knarr Tags: Short communication Source Type: research

Time profile of kinematic synergies of stroke gait.
Despite the sensory-motor deficits and the atypical kinematic behavior, stroke patients can produce joint covariations to control the center of mass trajectory in the forward progression plane, but the modulation of the synergy is impaired, reflecting altered adjustments, especially in the paretic limb of subjects with worse levels of motor recovery.
Source: Clinical Biomechanics - May 12, 2023 Category: Orthopaedics Authors: Gisele Francini Devetak, Roberta Castilhos Detanico Bohrer, Carla Rinaldin, Andr é Luiz Felix Rodacki, Elisangela Ferretti Manffra Source Type: research

Control of center of mass during gait of stroke patients: Statistical parametric mapping analysis
The statistical parametric mapping approach showed to be suitable for determining gait changes in post-stroke individuals, irrespective of their motor recovery stage.
Source: Clinical Biomechanics - May 25, 2023 Category: Orthopaedics Authors: Nicoly Dominique Scrok Cicarello, Roberta Castilhos Detanico Bohrer, Gisele F. Devetak, Andr é Luiz Felix Rodacki, Ana Paula Cunha Loureiro, Elisangela Ferretti Manffra Source Type: research

Imaging analysis of ischemic strokes due to blunt cerebrovascular injury
CONCLUSION With universal screening, CTA evidence of BCVI is common among blunt trauma patients. Although acute stroke is also relatively common in this population, two thirds of strokes are already evident on admission. One third of BCVI-related strokes occur after admission and often relatively early, necessitating rapid commencement of preventative treatment. Further studies are required to demonstrate the value of antithrombotic administration in preventing stroke in BCVI patients. LEVEL OF EVIDENCE Prognostic and Epidemiologic; Level IV.
Source: The Journal of Trauma: Injury, Infection, and Critical Care - June 1, 2022 Category: Orthopaedics Tags: 2020 AAST QUICK SHOT Source Type: research

Blunt cerebrovascular injuries: Outcomes from the American Association for the Surgery of Trauma PROspective Observational Vascular Injury Treatment (PROOVIT) multicenter registry
CONCLUSION Stroke and death remain significant risks for all BCVI grades regardless of the vessel injured. Antithrombotics represent the only management strategy that is consistently associated with a lower incidence of stroke and death in all BCVI categories. In the multi-injured BCVI patient with a high risk of bleeding on anticoagulation, antiplatelet agents are an efficacious alternative. Given the 40% mortality rate in patients who survived their initial trauma and developed a BCVI-related stroke, nontreatment may no longer be a viable option. LEVEL OF EVIDENCE Epidemiological III; Therapeutic IV.
Source: The Journal of Trauma: Injury, Infection, and Critical Care - June 1, 2021 Category: Orthopaedics Tags: ORIGINAL ARTICLES Source Type: research